Marketable Investment Securities, Restricted Cash and Cash Equivalents, and Other Investment Securities (Tables)

12 Months Ended

Dec. 31, 2018

Marketable Investment Securities, Restricted Cash and Cash Equivalents, and Other Investment Securities

Schedule of marketable investment securities, restricted cash and cash equivalents, and other investment securities

	As of December 31,
	2018		2017
	(In thousands)
Marketable investment securities:
Current marketable investment securities:
Strategic - available-for-sale	$	193	$	195
Strategic - trading/equity (Note 2)		2,370		93,367
Other		1,178,908		407,603
Total current marketable investment securities		1,181,471		501,165
Restricted marketable investment securities (1)		67,019		72,014
Total marketable investment securities		1,248,490		573,179
Restricted cash and cash equivalents (1)		578		393
Other investment securities:
Other investment securities		118,992		113,460
Total other investment securities		118,992		113,460
Total marketable investment securities, restricted cash and cash equivalents, and other investment securities	$	1,368,060	$	687,032

(1) Restricted marketable investment securities and restricted cash and cash equivalents are included in “Restricted cash, cash equivalents and marketable investment securities” on our Consolidated Balance Sheets.

Schedule of components of available-for-sale investments

	As of December 31,
	2018								2017
	Marketable								Marketable
	Investment		Unrealized						Investment		Unrealized
	Securities		Gains		Losses		Net		Securities		Gains		Losses		Net
	(In thousands)
Debt securities (including restricted):
U.S. Treasury and agency securities	$	66,823	$	40	$	(19)	$	21	$	84,286	$	22	$	(141)	$	(119)
Commercial paper		367,488		—		—		—		107,962		—		(10)		(10)
Corporate securities		805,259		91		(899)		(808)		282,256		—		(124)		(124)
Other		6,550		56		(2)		54		5,308		58		(1)		57
Total	$	1,246,120	$	187	$	(920)	$	(733)	$	479,812	$	80	$	(276)	$	(196)

Schedule of available-for-sale securities in continuous unrealized loss position by length of time and their fair value

	As of December 31,
	2018				2017
	Fair		Unrealized		Fair		Unrealized
	Value		Loss		Value		Loss
	(In thousands)
Debt securities:
Less than 12 months	$	647,241	$	(918)	$	410,145	$	(156)
12 months or more		137		(2)		34,340		(120)
Total	$	647,378	$	(920)	$	444,485	$	(276)

Schedule of fair value measurements

	As of December 31,
	2018								2017
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
	(In thousands)
Cash equivalents (including restricted)	$	859,220	$	30,858	$	828,362	$	—	$	1,425,798	$	655	$	1,425,143	$	—
Debt securities (including restricted):
U.S. Treasury and agency securities	$	66,823	$	66,823	$	—	$	—	$	84,286	$	84,286	$	—	$	—
Commercial paper		367,488		—		367,488		—		107,962		—		107,962		—
Corporate securities		805,259		—		805,259		—		282,256		—		282,256		—
Other		6,550		—		6,357		193		5,308		—		5,113		195
Equity securities		2,370		2,370		—		—		93,367		93,367		—		—
Total	$	1,248,490	$	69,193	$	1,179,104	$	193	$	573,179	$	177,653	$	395,331	$	195

Schedule of changes in Level 3 instruments

	Level 3
	Investment
	Securities
	(In thousands)
Balance as of December 31, 2016	$	6,721
Net realized and unrealized gains (losses) included in earnings		(10,488)
Net realized and unrealized gains (losses) included in other comprehensive income (loss)		9,199
Purchases		—
Sales		(5,099)
Settlements		(138)
Issuances		—
Transfers into or out of Level 3		—
Balance as of December 31, 2017	$	195
Net realized and unrealized gains (losses) included in earnings		—
Net realized and unrealized gains (losses) included in other comprehensive income (loss)		4
Purchases		—
Sales		—
Settlements		(6)
Issuances		—
Transfers into or out of Level 3		—
Balance as of December 31, 2018	$	193

Schedule of gains and losses on sales and changes in carrying amounts of investments

	For the Years Ended December 31,
Other, net:	2018		2017		2016
	(In thousands)
Marketable investment securities - realized and unrealized gains (losses) (1)	$	8,165	$	90,979	$	116,550
Derivative financial instruments - net realized and/or unrealized gains (losses)		—		—		5,405
Marketable investment securities - other-than-temporary impairments		—		—		(2,863)
Non-marketable investment securities - gains (losses) on sales/exchanges		—		10,488		—
Costs related to early redemption of debt		(3,261)		(1,470)		—
Gain (loss) on sale of subsidiary		7,004		—		—
Equity in earnings of affiliates		(2,110)		2,163		2,508
Other		2,003		2,328		(2,285)
Total	$	11,801	$	104,488	$	119,315

(1) During the year ended December 31, 2018, we recorded unrealized losses of $2 million related to equity securities held as of December 31, 2018.